Abstract: A tank for transporting liquids, having a baffle system for control of liquid surges produced by acceleration of the tank in transit. Large cylindrical hollow baffles, parallel to the longitudinal tank axis, are mounted between transverse support partitions, the entire assembly being rigidly attached to the walls of the tank vessel. Small relief holes in the cylindrical baffles allow the liquid level in the baffles to change as the tank is filled or drained. Transverse liquid surges are controlled by the cylindrical baffles, which prevent surging of the liquid contained within the baffles, while deflecting and dissipating wave motion and surges of liquid outside the baffles. Longitudinal surges are controlled by the transverse support partitions.

Abstract: Apparatus for controlling the spraying of water or other fluid from a tank truck or other reservoir. A plurality of valves may be turned on with a single pump and individually turned off as desired during spraying operations, by the application of air pressure to control lines leading to the individual valves. The spray valves are individually adjustable for control of the flow rate, direction and pattern of spraying, and are so constructed as to minimize malfunctions from jamming of the valve mechanism experienced with other valves while spraying in a sandy environment.